UniProtKB/Swiss-Prot Q9H251: Variant p.Asn452Ser

Cadherin-23
Gene: CDH23
Chromosomal location: 10q21-q22
Variant information

Variant position:  452
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants have been found in patients and disease-association is reported in literature. However, this classification is not a definitive assessment of variant pathogenicity.
  • Polymorphism: No disease-association has been reported.
  • Unclassified: Variants have been found in patients but disease-association remains unclear.

Residue change:  From Asparagine (N) to Serine (S) at position 452 (N452S, p.Asn452Ser).
Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.

Physico-chemical properties:  Change from medium size and polar (N) to small size and polar (S)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  1
The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page

Variant description:  In DFNB12.
Any additional useful information about the variant.



Sequence information

Variant position:  452
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  3354
The length of the canonical sequence.

Location on the sequence:   FANESVPDHVGYAKVKITLI  N ENDNRPIFSQPLYNISLYEN
The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.

Residue conservation: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         FANESVPDHVGYAKVKITLINENDNRPIFSQPLYNISLYEN

Mouse                         FANESVPDHVGYAKVKITLINENDNRPIFSQPLYNVSLYEN

Rat                           FANESVPDHVGYAKVKITLINENDNRPIFSQPLYNVSLYEN

Sequence annotation in neighborhood:  
The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.

TypePositionsDescription
Chain 24 – 3354 Cadherin-23
Topological domain 24 – 3064 Extracellular
Domain 349 – 460 Cadherin 4
Glycosylation 434 – 434 N-linked (GlcNAc...)
Glycosylation 466 – 466 N-linked (GlcNAc...)
Glycosylation 472 – 472 N-linked (GlcNAc...)
Alternative sequence 1 – 2240 Missing. In isoform 7 and isoform 9.
Alternative sequence 25 – 3127 Missing. In isoform 10 and isoform 11.


Literature citations

CDH23 mutation and phenotype heterogeneity: a profile of 107 diverse families with Usher syndrome and nonsyndromic deafness.
Astuto L.M.; Bork J.M.; Weston M.D.; Askew J.W.; Fields R.R.; Orten D.J.; Ohliger S.J.; Riazuddin S.; Morell R.J.; Khan S.; Riazuddin S.; Kremer H.; van Hauwe P.; Moller C.G.; Cremers C.W.R.J.; Ayuso C.; Heckenlively J.R.; Rohrschneider K.; Spandau U.; Greenberg J.; Ramesar R.; Reardon W.; Bitoun P.; Millan J.; Legge R.; Friedman T.B.; Kimberling W.J.;
Am. J. Hum. Genet. 71:262-275(2002)
Cited for: VARIANTS DFNB12 GLY-124; SER-452; GLN-480; GLN-582; TRP-1060; ASP-1186; PRO-1586; LYS-1595; ASN-1846; TRP-2465 AND HIS-2608; VARIANTS USH1D PRO-484; ARG-1206; ALA-1209; GLY-2517; SER-2744; GLY-2833 AND HIS-3175; VARIANTS CYS-3; ALA-490; ASN-496; THR-1222; GLN-1437; MET-1620; ILE-1675; GLN-1804; ILE-1887; SER-1999; LYS-2044; GLN-2066; ILE-2283; GLN-2358; LEU-2380; GLN-2588; GLU-2933; ASN-2954 AND SER-2962;

Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.